Magnifying device



March 31, 1931. o. RENNICZKE 1,798,953

MAGNTFYTNG DFTVTCF- Filed June 26, 1929 A TTORN Y Patented Mar. 31, 1931 PATENT OFFICE OTTO RENNICKE, OF NEW YORK, N. Y.

MAGNIFYING DEVICE 7 Application filed .Tune 26,

This invention relates to magnifying devices and particularly to devices of this class wherein the lens or lens supporting member is capable of longitudinal and transverse adjustment to position the lens of said member in proper alinement over a workpiece or article arranged on the device; and the object of the invention is to provide a device of the class specified involving a base plate or frame with means at one side portion and upon the upper face thereof for supporting an article or workpiece thereon, and with means at the other side of the frame for adjustably mounting and guiding a lens supporting member with respect to the workpiece supported in said frame, said means comprising a plurality of transversely spaced bars forming guide channels or recesses in which the lens supporting member or a part thereof is frictionally and tensionally supported; a further ObJGCl] being to provide a lens supporting member comprising an L- shaped arm part with which the lens frame is pivotally supported whereby said frame and lens maybe moved into different positions and adjusted to focus the lens with respect to the work; and with these and other objects'in view, the invention consists in a device of the class described and for the purpose specified which is simple in construction, eflicient in use and which is constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Fig. 1 is a plan view of a device made according to my invention and indicating the method of its use.

Fig. 2 is an end view of the device as seen in Fig. 1; and,

Fig. 3 is a section on the line 33 of Fig. 1. e In practice, I provide a base plate or frame 5 which may be of any desired form and construction but which is preferably fashioned from sheet metal and is provided with depending peripheral flanges 6 to form a recess 7 in the bottom of the frame, the top plate 1929. Serial no. 373,722.

of the frame being pressed downwardly at one side thereof to form an oblong, elongated aperture 8, the contour of which is such as to receive a slide rule 9 of conventional size and form, it being understood at this time, however, that a tool or workpiece of any kind or class may be supported upon the frame and the frame fashioned to suit the particular work iece. In connection with rulers, it will also e apparent that the frame may be fashioned to accommodate rulers of various dimensions, the ruler 9 in the construction shown having three scales 9a, 9b and 90 arranged longitudinally thereof, parts of the scales being shown in the accompanying drawing. It is in connection with these scales, that the lens of the device, later de scribed, is adapted to cooperate. As in all slide rules, a slide rule bar 10 is employed.

At the other side of the frame 5 and extending longitudinally thereof are four bars 11, 12, 13 and 1 1, the ends of which are supported in keepers 15 riveted or otherwise secured to the upper face of the frame as seen at 16, note Fig. 3. Pivoted to the upper ends of the keepers 15, as seen at 17, are handle members 18 which may be extended into the position shown in full lines in Figs. 1, 2 and 3 and moved into the position indicated in dot and dash lines in Fig. 1. Y

The bars 11 to 14 inclusive are spaced apart within the keepers 15' by washers or other spacing members 19, note Figs. 2 and 3 and are held in position by pins or rivets 20 which pass through the ends of said bars and said washers, thus forming between the keepers 15, three longitudinal channels or passages 21, 22 and 23 into which the lower end portion of the L-shaped or angular part 24 of the lens supporting member 25 is adapted to be placed.

' The member 25 includes a lens frame 26 pivoted to the angular portion of the part 25 as seen at 27 and in which the magnifying lens 28 is supported as clearly seen in Fig. 3 of the drawing.

It will be seen upon a consideration of the drawing that the part 24 of the member 25 maybe placed in either one of the three channels, 21, 22 and 23 and may be moved longitudinally of the channels to arrange the lens at any desired point longitudinally of the ruler 9. When said member is in the chan nel 21, the lens will be in position to read the characters in the scale line 9a, and when in' the channel 22 the scale line 9?); and when in the channel 23, the scale line 90.

The usual pointer or marker frame 10a is arranged to slidably engage theruler proper and includes a glass panel 105 upon which is arranged the transverse line 100, note Fig. 1, this construction being common in slide rulers of conventional form.

It will be understood that by virtue-of any kindor classmay be'arranged upon the frame and the member- 25 adjustable with respect thereto to more clearly examine any. part or section of the workplece disposed;

within the path of adjustable movement'of thelens' supporting member. In the con str-uction shown, it will be understood that the part 2a of said member is frictionally and tensionallysupportedin the recesses or chan nels formed bet-ween the separate bars eniployed,and various other changes in and modifications of, the construction herein shown and described may be made within thescope of the appendedclaimswithout departing from the spirit of my invention or sacrificing-its advantages.

VI-Iaving fully described my invention, What I claim as new and desireto'secure byLetters Patent, is p 1. A device for magnifyingportions of a slide ruler or the like, comprising an elongated plate, the upper surface of said plate having anelongated recess in which the rule is adapted to be placed to 'expose one surface' thereof, a plurality of guidewayson the up per surface'of said-plate and in para-llel-re'la tion with reference to said recess and spaced transversely with respectthereto' a-lens sup-1 porting'frame detachably supported in con= 'nection with said guideways and movable longitudinally with respectthereto, and said frame having, a lenssupporting part ar-' ranged over and movable transversely and longitudinally of said recess. 7

2. A device for magnifying portions of a slide ruler or the like, comprising an elongated plate, the upper surface of said plate having-an elongated recess in which theruler is adapted to be placed-to expose one'surface thereof, a plurality of guideways on the upper surface of said plate and in parallel relation with reference to said recess and spaced transversely with respect thereto, a lens sup porting frame detachably supported in connection with said guideways and movable longitudinally with respect thereto, and said frame having a lens supporting part arranged over and movable transversely and longitudinally of said recess, the lens supporting part of said frame having a pivotal support to permit'its movement into different angular positions.

3'; -A' device for magnifying portions of a slide ruler or the like, comprising an elongated plate, the upper surface of said plate having anelongated recess in which theru'ler is adapted to be placed toeXpose-one' surface thereof, a plurality of guideways o'n theupper surface of said plate and in parallel relation with reference to said recess and spaced transversely with respect thereto, a lens sup.- porting frame detachably supported in con-' nection with said guideways and movable longitudinally with respect thereto, and said frame having a' lens supporting part ar ranged over and movable transversely and longitudinally of said recess, the lens supporting part of said frame having ap votal support to permit its movement into different: angular positions, and the other part of SLlCl" frame 'being L shaped in form. V r

l. A device for magnifying portions of" a slide ruler or the like, comprising an elongated plate, the upper surface of said plate having: an elongated 'recess'in which the ruler is adapted to'be placed to expose one surface thereof, a plurality of guideways on the upper surface of said plate and in parallel rela tion with reference to said recess and spaced transversely with respect thereto, a lens supporting frame detachably supported in connection with said guideways' and movable longitudinally withrespect thereto, and said frame having a lens supporting part arranged over and' movable transversely and longitudinally of, said recess, the lens supporting part of said frame having a 'pivotal support to permit its movement into different angular positions, the other part of said frame being L-shaped in form, and said guideways' being formed of a plurality of bars arranged in parallel and spaced relation with reference to each other; and means at the" r ends of said b'ars'for securing the same tosaid plate and for spacing the same one from the other.' a i 7 5. A device for magnifying portions of-a slide ruler or the like, comprising an elongatedplate, the'upper' surface of saidplate having an elongated recess in which the ruler isadapted to be placed to expose one surface thereof; aplurality of guideways on theup.-

- persurfaceof said plate? andin parallel rela i tion with-reference to said recess and spaced transversely with respectthereto, a lens' supporting frame detachably supported in connection with said guideways and movable longitudinally with respect thereto, and said frame having a lens suppjorting part ar ranged over and movable transversely and longitudinally of said recess, the lens supporting part of said frame having a pivotal support to permit its movement into different angular positions, the other part of said frame being L-shaped in form, said guideways being formed of a plurality of bars arranged in parallel and spaced relation with reference to each other and means at the ends of said bars for securing the same to said plate and for spacing the same one from the other, and handle members pivotally supported in connection with the ends of said plate.

6. A device of the class described comprising an elongated plate, means for supporting an elongated article against shifting movement upon the upper face of said plate, a plurality of bars mounted on the upper face of said plate in parallel relation to said means and to each other, said bars being spaced apart to form guide channels, a lens supporting frame, one end of which is adapted to be frictionally passed into said channels and movable longitudinally thereof, and the other end of said frame having a lens supporting part arranged over said first named means and movable with respect thereto in the adjustable movement of said frame in said channels.

7. A device of the class described comprising an elongated plate, means for supporting an elongated article against shifting movement upon the upper face of said plate, a plurality of bars mounted on the upper face of said plate in parallel relation to said means and to each other, said bars being spaced apart to form guide channels, a lens supporting frame, one end of which is adapted to be frictionally passed into said channels and movable longitudinally thereof, the other end of said frame having a lens supporting part arranged over said first named means and movable with respect thereto in the adjustable movement of said frame in said channels, and said lens supporting part being pivoted to permit movement of said part into different angular positions with respect to the first named means.

8. A device of the class described comprising an elongated plate, means for supporting an elongated article against shifting movement upon the upper face of said plate, a plurality of bars mounted on the upper face of said plate in parallel relation to said means and to each other, said bars being spaced apart to fonn guide channels, a lens supporting frame, one end of which is adapted to be frictionally passed into said channels and movable longitudinally thereof, the other end of said frame having a lens supporting part arranged over said first named means and movable with respect thereto in the adjustable movement of said frame in said channels, said lens supporting part being pivoted to permit movement of said part into different angular positions with respect to the first named means, and handle members coupled. with the upper face of said plate at the end portions thereof and adapted to be extended to project beyond one side edge of said plate.

9. The combination with a slide ruler of a magnifying device comprising an elongated plate, the upper surface of which is provided with a recess in which the ruler is placed to prevent movement of the ruler with respect thereto, a plurality of guideways arranged on the upper face of said plate at one side of said recess and in spaced, parallel relation with respect thereto, and a lens supporting frame, detachably and adjustably supported in connection with said guideways to arrange the lens thereof in different positions transversely with respect to the ruler supported in said recess as well as longitudinally thereof.

10. The combination with a. slide ruler of a magnifying device comprising an elongated plate, the upper surface of which is provided with a recess in which the ruler is placed to prevent movement of the ruler with respect thereto, a plurality of guideways arranged on the upper face of said plate at one side of said recess and in spaced, parallel relation with respect thereto, and a lens supporting frame, detachably and adjustably supported in connection with said guideways to arrange the lens thereof in different positions transversely with respect to the ruler supported in said recess as well as longitudinally thereof, said frame including a pivotally mounted lens supporting part.

11. The combination with a slide ruler of a magnifying device comprising an elongated plate, the upper surface of which is provided with a recess in which the ruler is placed to prevent movement of the ruler with respect thereto, a plurality of guideways arranged on the upper face of said plate at one side of said recess and in spaced, parallel relation with respect thereto, a lens supporting frame, detachably and adjustably supported in connection with said guideways to arrange the lens thereof in different positions transversely with respect to the ruler supported in said recess as well as longitudinally thereof, said frame including a pivotally mounted lens supporting part, and said guideways being formed by a plurality of bars arranged in spaced parallel relation to each other, and means at the ends of said bars for coupling the same together and to said plate.

12. The combination with a slide ruler of a magnifying device comprising an elongated plate, the upper surface of which is provided With-'a recess in which the ruler is placed to prevent movement of therulerwithre spect thereto, a plurality oiiguideways ar' ranged on'the upper face of said plate at one side of said recess and in spaced, parallel relation With respect thereto, a lens supporting frame, detachably and adjustably supported in connection With said guideways toarrange the lens thereof in d'ifierentpositions transversely with respect to the rulersu'pported in'said recess a's'well as longitudinally thereof, said frame including a pivotally mounted lens supporting part, said guideways being formed by a plurality of bars arranged in spaced parallel relation to each other" and means at the ends of said bars for coupling the same together and to said plate, and handle members pivotally supported in connection with said last named means. 29 In testimony that I clain the foregoing as my'inventionI have signed my name this I th day of June, 1929. 7

OTTO RENNICKE. 

